Model 8 population based Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

The population of a village has increased annually at the rate of 25%. If at the end of 3 years it is 10,000, the population in the beginning of the first year was

a) 5000

b) 5120

c) 4900

d) 4500

Question : 2

The population of a town is 9000. It the number of females increases by 5% and the males by 7.5%, what will be the total population after increase. The number of females currently is 3000.

a) 9200

b) 9600

c) 10500

d) 9540

Question : 3

A TV was bought at a price of Rs.21,000. After one year the value of TV was depreciated by 5%. Find the value of the TV after one year.

a) Rs.20,950

b) Rs.19,950

c) Rs.18,950

d) Rs.17,950

Question : 4

Of the 1000 inhabitants in a town 60% are males of whom 20% are literate. If of all the inhabitants, 25% are literate, then what percentage of the females of the town are ilterate ?

a) 32.5

b) 27.5

c) 37.5

d) 22.5

Question : 5

The value of a machine depreciates by 5% every year. If its present value is Rs.2,00,000, its value after 2 years will be

a) Rs.1,99,000

b) Rs.1,80,500

c) Rs.1,80,000

d) Rs.2,10,000

Question : 6

The value of a machine depreciates every year by 10%. If its present value is Rs.50,000 then the value of the machine after 2 years is _________.

a) Rs.45,000

b) Rs.40,050

c) Rs.40,005

d) Rs.40,500